Mersana Therapeutics, Inc. (MRSN)
Data as of , from SEC Form 4 filings.
No open-market insider trades (90d)Watch MRSN
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- Mohan Bala - OfficerOpen-market sale$762
Martin H. Huber Jr. - OfficerOpen-market sale$15K
About Mersana Therapeutics, Inc. (MRSN)
Mersana Therapeutics, Inc. is an SEC registrant, filing under CIK 0001442836, classified as pharmaceutical preparations. It is grouped with Health Care companies on this site.
MRSN Form 4 activity by transaction type, last 90 days
No Form 4 activity for MRSN in the last 90 days.
MRSN insider transactions (Form 4)
4713 Form 4 filings on record, the earliest from Oct 3, 2024, newest first.
| Date | Insider | Transaction | Security | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Andrew A. F. Hack | Other | Common Stock | 578 | - | - | |
| Andrew A. F. Hack | Other | Common Stock | 346,545 | - | - | |
| Andrew A. F. Hack | Derivative | Stock Option (right to buy) | 2,460 | - | - | |
| Andrew A. F. Hack | Derivative | Stock Option (right to buy) | 2,088 | - | - | |
| Andrew A. F. Hack | Derivative | Stock Option (right to buy) | 400 | - | - | |
| Andrew A. F. Hack | Derivative | Stock Option (right to buy) | 1,000 | - | - | |
| Andrew A. F. Hack | Derivative | Stock Option (right to buy) | 368 | - | - | |
| Andrew A. F. Hack | Derivative | Stock Option (right to buy) | 118 | - | - | |
| Andrew A. F. Hack | Derivative | Stock Option (right to buy) | 1,002 | - | - | |
| Andrew A. F. Hack | Derivative | Stock Option (right to buy) | 439 | - | - | |
| Andrew A. F. Hack | Derivative | Stock Option (right to buy) | 1,800 | - | - | |
| Andrew A. F. Hack | Derivative | Stock Option (right to buy) | 734 | - | - | |
| Andrew A. F. Hack | Derivative | Stock Option (right to buy) | 2,200 | - | - | |
| Mohan Bala - Officer | Open-market sale | Common Stock | 77 footnote F2 | $9.90 | $762 | |
| Mohan Bala - Officer | Option exercise | Restricted Stock Unit | 250 footnote F2 | $0.00 | - | |
| Mohan Bala - Officer | Option exercise | Common Stock | 250 footnote F2 | $0.00 | - | |
| ||||||
| Martin H. Huber Jr. - Officer | Option exercise | Common Stock | 6,670 | $0.00 | - | |
| Martin H. Huber Jr. - Officer | Open-market sale | Common Stock | 2,012 | $7.31 | $15K | |
| Martin H. Huber Jr. - Officer | Option exercise | Restricted Stock Unit | 6,670 | $0.00 | - | |
 Kristen Hege - Director | Grant or award | Stock Option (right to buy) | 61,500 | $0.00 | - | |
 David M. Mott - Director | Grant or award | Stock Option (right to buy) | 61,500 | $0.00 | - | |
| EcoR1 Capital, LLC - 10% Owner | Other | Common Stock | 8,036,688 | - | - | |
| EcoR1 Capital, LLC - 10% Owner | Other | Pre-Funded Warrants | 8,036,688 | - | - | |
| Mohan Bala - Officer | Option exercise | Common Stock | 6,250 | $0.00 | - | |
| Mohan Bala - Officer | Open-market sale | Common Stock | 1,884 | $1.90 | $4K | |
| Mohan Bala - Officer | Option exercise | Restricted Stock Unit | 6,250 | $0.00 | - | |
| Brian Deschuytner - Officer | Option exercise | Common Stock | 50,000 | $0.00 | - | |
| Brian Deschuytner - Officer | Open-market sale | Common Stock | 8,089 | $2.00 | $16K | |
| Brian Deschuytner - Officer | Open-market sale | Common Stock | 5,598 | $1.96 | $11K | |
| Brian Deschuytner - Officer | Option exercise | Restricted Stock Unit | 50,000 | $0.00 | - | |
| Alejandra Carvajal - Officer | Option exercise | Common Stock | 50,000 | $0.00 | - | |
| Alejandra Carvajal - Officer | Open-market sale | Common Stock | 8,089 | $2.00 | $16K | |
| Alejandra Carvajal - Officer | Open-market sale | Common Stock | 5,598 | $1.96 | $11K | |
| Alejandra Carvajal - Officer | Option exercise | Restricted Stock Unit | 50,000 | $0.00 | - | |
| Mohan Bala - Officer | Option exercise | Common Stock | 50,000 | $0.00 | - | |
| Mohan Bala - Officer | Open-market sale | Common Stock | 8,089 | $2.00 | $16K | |
| Mohan Bala - Officer | Open-market sale | Common Stock | 5,598 | $1.96 | $11K | |
| Mohan Bala - Officer | Option exercise | Restricted Stock Unit | 50,000 | $0.00 | - | |
| Ashish Mandelia - Officer | Option exercise | Common Stock | 30,000 | $0.00 | - | |
| Ashish Mandelia - Officer | Open-market sale | Common Stock | 4,855 | $2.00 | $10K | |
| Ashish Mandelia - Officer | Open-market sale | Common Stock | 3,361 | $1.96 | $7K | |
| Ashish Mandelia - Officer | Option exercise | Restricted Stock Unit | 30,000 | $0.00 | - | |
| Timothy B. Lowinger - Officer | Option exercise | Common Stock | 50,000 | $0.00 | - | |
| Timothy B. Lowinger - Officer | Open-market sale | Common Stock | 8,089 | $2.00 | $16K | |
| Timothy B. Lowinger - Officer | Open-market sale | Common Stock | 5,598 | $1.96 | $11K | |
| Timothy B. Lowinger - Officer | Option exercise | Restricted Stock Unit | 50,000 | $0.00 | - | |
| Lawrence M. Alleva - Director | Grant or award | Stock Option (right to buy) | 9,615 | $0.00 | - | |
MRSN insider trading FAQ
What is the latest insider trade for MRSN?
Mersana Therapeutics, Inc. (MRSN) has filed no insider reports in the last 90 days. The most recent on record is dated 2026-01-06. The full record for MRSN runs to 13 Form 4 filings, the earliest from 2024-10-03. InsiderAlpha adds new Form 4, Form 144 and 8-K filings as they arrive from SEC EDGAR.
How many insiders are buying MRSN stock?
No insider purchases of MRSN were filed in the last 90 days.
How many insiders are selling MRSN stock?
No insider sales of MRSN were filed in the last 90 days. 13 sales are on record for this company.
Where can I see MRSN SEC filings (Form 4, 10-K, 10-Q, 8-K)?
This page collects MRSN Form 4 insider transactions, Form 144 sale notices and 8-K filings in one place. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.
More Health Care companies with insider activity
Recent insider filings
10The EDGAR links open each original Form 4, so you can check any number on this page against the filing it came from.
- - Andrew A. F. Hack view on EDGAR
- - Mohan Bala view on EDGAR
- - Martin H. Huber Jr. view on EDGAR
- - Kristen Hege view on EDGAR
- - David M. Mott view on EDGAR
- - EcoR1 Capital, LLC view on EDGAR
- - Mohan Bala view on EDGAR
- - Brian Deschuytner view on EDGAR
- - Alejandra Carvajal view on EDGAR
Related companies with recent insider activity
Learn more
- What the Form 4 transaction codes mean
- Grants, option exercises, gifts and tax withholding are not trades on the market. The codes say which is which.
- Insider activity in Health Care
- Where MRSN's peers are being bought and sold.
- Every recent Form 4
- The market-wide feed, updated as filings arrive from SEC EDGAR.
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